Differential axle device.



L. R. HIBBA'RD.

DIFFERENTIAL AXLE DEVICE. vAPPLI'CATIGH FILED MAR. z, 190s.

Patented Juy13,1909`.

ulm'U lllw uli-lum ATTO/iwf v' UNITED STATES l rAIrinil oFFIon LOUIS R. H'IBBARD, oFLos ANGELES, CALIFORNIA, .AssIeNon OF oNaFoimTI-I To CHARLES BENEDIOT AND ONE-FOURTH 'rov J. HERBERT -K-nArr.,Born: or. j LOsf ANGELES, cALI FORMA. i

To allwhom it-may'concerf/t: Be it known that I, LoUIsR. HIBB'ARD, a` citizen of the UnitedStates', residingin the f city of Los Angeles, county ofLos Angeles, and State of' Calif'ornia, 'have,"t invent-ed new and useful Improvements in Differential Axle Devices and in the Processes oiMaking thel Same, of which. the following'is aspecliication. 1"

In the construction of differential axle devicesit is customary' tof connedt the parts of the axles'by means of a box'or4 jacket,V the parts of 'which are secured together by boltv gether under great' pressure so t ati they would 4be ret-ained in engagement by friction. Where bolts, screwsor rivets are used to hold- `the parts together, they are liable to crystallize and break'thereby rendering the de- 'vice unsafe. Where great pressure is. reL` qui-red'to unite parts'telescopically, consider .able expense is involved in procuringl the machinery for. such purpose, Vand the parts'. require` considerable machine Work to fit them for theirintended use. r l" 'It' is theob'ject of my inventionto con-'- struct a .differential axle "device-ofi easily formed-'parts with a minimum aniount'oi machine 4work to iit .them fontheiryintended use and thento4 unite theparts=in Working relation by a jacket cast# around -Lthesame of metal of sufficient strength to2 produce a4 useful axle. I' accomplish thisaobjectby the process described herein and illustrated-in the accompanying drawings whichl show so much of the axle as is necessary toillustrate my process." 4. In the drawings, Figurevl lis a `side-'elevation of the-parts' forming the .differential axle device with certain of the parts in central ln gitudinal section. Fig. 2 isan endelevation of a sleeve which surrounds one of the ends of the two parts forming the axle. Fig. 3 is a yside elevation of the same sleeve. Fig.` 1 1 is an end .elevation [of the securing or end thrust ring; Fig. 5 is aside elevation of the securing ring. Fig. 6 shows a slight modification. 10 isone of the ends and 11 is theiother 50"-end of a divided axle. These parts meet at l2'and may or may not be reduced in size asdesired.. Surrounding thc meeting ends of these arts is a lcentral sleeve 13 lwhich is y videdextcinally lwith aplu- 55 Inthe drawings I have DIFFERENTIAL DEVICE.: 'i

f 4Speciflcati'on.of LettersPatent .i application med'irarch 2, 1909. serial- Np: 4b;e1 4s 'taining grooveli') in..which is received an .annular securing ring 1.6 which is longitudiscrews or rivets or by forcing thelparts to-` rannte@ .ragga- 190e.

l shownfiiveglbut anyothernumber' as desired may beused; This sleeve is preferably made v of cast iron, and the interior is smoothly bored and snugly fits the ends 'of the axle. One' of the ends', shown in the 604 drawing as the end of'part 11 has aworking fit within the sleeve. lhe 'other end of the sleeve preferably-"snugly fits the other part of the axle.. Atthe end of this sleeve inthe part' ofI the axle marked-11 is an annular re nally dividedjasbest'shownin Fi 4, so that ythe parts can l separated and'p aced in the grooveQ-15 whenkitis desired to assemble the parts.' .Thisringhas a working iit in the re- .tainingly roovef-'andl'its external diameter is preferab y thejsam'e -astlatof sleeve T13. It 1s provided.4 with" :transverse lubricating grooves 17l and aglongitudinal lubricating roove 18.. .Surrounding the art 11 just eyond groove 15isga bearings eeve 19 also,l of castV metal; which is provided with external annular ribs`20 of which there may be "anv desired number. 'In the part 1() of the 80 axle a `short` distance from sleeve 13'I provide an annular groove 21. The partsbe-l ing thus prepared are assembled as` shown in Fig. 1 within a suitable mold and la metal jacket' 22 is cast aroundthe parts. This S5 jacket will fuse to the outside of sleeves 13 and` 19 and also upon. the end ofaxle '10 ex' terior ,sleeve 13, suitable fluxing"material being irst put on the outside of these arts to cause the jacket to fuse thereto. y this 9.0r construction a lchea efficient differential axle device is provi ed. The jacket-being cast around and being fused to the. sleeves and the securing ring `andto the other portion of the axle makes an absolutely secure construction, which is Vnot subject to the danger. of accidentallyl coming apart owing 'to thev breaking ofV 'binding screws or bolts.

After casting jacket 22 an oiling channel'23 s maybe bored through the jacket and .secur- 10eA ing ring to an annularoil channel'llin interior` of the ring.. 'l-liesecuring'jng-mayli have transverse oil'. eh'annels 17 and' oil channel 26 may be I f'ided. inthe sleeves.

In Fig. 6 I'have s ,own a slight-modicaf 2105' tion of my differential axledevice.

construct1on 27 and 28 are lthe ditgided'end of the axle'. The end 27 Iis rovi'ded'with`- plurality of. ooves 29 an the end 28 provided wit a securing groove 30'. The 110 split securing ring-31 is formed of the same external diameter as the partof the axle 28. Bearing-sleeve 32 only extends as far as the vend of the part'28. Jacket 33 is cast With the bearing sleevev32 and 34 occupying the respective lpositions .they occu y When the parts are assembled. An annular groove 35 Which registers with the securing ring when the 'parts are assembled is'cored in the jacket. A second annular groove 36 is cored in the jacket so as to register with and surround the annular grooves 29. The end of' the jacket has a tight lit with the part 27 when assembled vfor use, and a thin disk 37 of tempered steel may-be placed between the ends of the divided axle when the parts areassembled.

That part of the jacket Which surrounds the part 27 Where it contacts-With the same is in close contact. Holes 3 8 and 39 'are provided inthe jacket through Which cast metal is introduced. The parts are .assembled as shown in Fig. 6, and cast metalli() would be poured through hole 38 and would fuse with the jacket and with the securing' ring. Cast metal 41 would be poured through hole 39 and lwould fuse with the -jacket and thereby unite the same to the end 27 of the axle.

By this construction -it will be observed that the'main portion of the jacket may be castv before the parts are assembled. If desired bearing sleeves 32 and 34 c'ouldbe cast interal with the jacket, I prefer, however, to

' ave themcast ofV cast iron and the jacket. made of cast steel, as thereby better Wearing surfaces are provided Where the parts con- 'tact with the axle, and cas-t steel gives greater strength to the main part of the jacket.

Having described vmy invention 'what claim is:

1. The herein described process of forming. a diierential axle device which consists in preparing the divided ends of the axle With suitable grooves, preparing suitable sleeves to slip over the ends of the axle,'prepar 1ng a securing ring adapted to it into oneof the. grooves of the axle, then assembling the lpart'sin their proper relation and then inclosing the parts in a suitable mold, and casting a, metal jacket around the same. f

. 2. The herein described processof lform'- ing a differential device which consists in preparing the divided ends of the axle with l suitable grooves one of said ends having a securing ringV groove, then preparing a divided securing ring, then preparing a jacket axle, preparing a divided securing ring adapt-- ed to t into the groove in that part of the jacket around the sleeves With annular grooves on the interior thereof registering withthe securing ring groove and-.With the. rooves in the other part of the axle, then tting the lj acket to slip upon the end of the axle not containing the securing ring groove,

then assembling the parts in their proper' relation and pouring cast metal into the jacket around the securing ring, and around the grooves in the other part of the axle.

In witness that Iclaim the foregoing I have hereunto subscribed my name this 22nd" day of February, 1909. LOUIS R. HIBBARD.

Witnesses:

` C. E. HARPHAM, S. B. AUSTIN.

'axle provided with sleeves, then casting a 

